Light reminder: Turn signal-turn left, the leaf shape indicator on the left flashes blue; Turn right, the leaf shape indicator on the right flashes blue; Go straight, the indicators on both sides are always blue. Power indicator: battery voltage is 34V-34.5V±0.5V, and the power indicator is flashing green; when the battery voltage is higher than 34.5V±0.5V, the power indicator is steady green; The battery voltage is lower than 34V±0.5V, and the battery indicator is steady red (and raise your head while riding).When charging, it flashes yellow, and it is green when it is full (powered on). Alarm indicator light: When the pedal inclination exceeds 15°, the status light is steady red and the motor stops. Safety reminder: Low battery reminder (when the voltage is lower than 34V, the red light flashes with intermittent buzzer sound). Speed limit protection: 9KM/H activates the speed limit function; 10KM/H activates the buzzer to overspeed alarm (and raise your head while riding). Name:scooter main board controller Working voltage: 34-42V Maximum power: 700W : 10 minutes Fit:for Self Balancing Colour:As Shown Material:PCB board Package Contents: 1 set x scooter main board controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.